/*
 * FileAsMsg plug-in for Miranda IM and QIP Infium.
 * Sending/receiving files via instant messaging without protocol support.
 * Homepage: http://code.google.com/p/fileasmsg/
 *
 * Copyright (c) 2008, Radist <radist.nt@gmail.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Name(s) of contributor(s) may not be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Radist ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Radist BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef __FILEASMESSAGE_PROTO__H__R___
#define __FILEASMESSAGE_PROTO__H__R___

#include <Windows.h>
#include "threads.h"
#include "TransferSession.h"

#define CHUNK_SIZE_MAX 3072
#define PROTO_CMD_LEN 4
#define PROTO_BLOCK_LEN 1
#define FAM_HEADER_LEN (sizeof(FAM_HEADER)/sizeof(FAM_HEADER[0])-1)
extern const char FAM_HEADER[9];
extern const char FAM_USERMSG[80];
extern const char FAM_FLAGS_MAP[];

#ifndef max
#define max(a,b) (((a)>(b))?(a):(b))
#endif

class SendSession
	: public TransferSession
{
	int state;
	WaitableTimer wtmr;
	char send_buffer[max(4*MAX_PATH + sizeof(FAM_USERMSG),(CHUNK_SIZE_MAX+2)/3*4)+FAM_HEADER_LEN+PROTO_CMD_LEN+21/*2 numbers + trailing zero*/];
protected:
	virtual void ProcessSent(bool timedout);
public:
	static DWORD min_send_interval;
	SendSession(HANDLE h_Contact, wchar_t *filename);
	virtual ~SendSession(void);
	virtual void ProcessMsg(FAMMSGINFO &dbe);
	virtual void EndTransfer(bool success = false);
};

class RecvSession
	: public TransferSession
{
	int state;
protected:
	virtual void ProcessSent(bool timedout);
public:
	RecvSession(HANDLE h_Contact, wchar_t *filename, DWORD flags, DWORD filesize, DWORD chunk_size);
	virtual ~RecvSession(void);
	virtual void ProcessMsg(FAMMSGINFO &dbe);
	virtual void EndTransfer(bool success = false);
};

#endif//__FILEASMESSAGE_PROTO__H__R___
